The original story of SUPERMAN was that Kal-El was born to Jor-El (a scientist) and his wife Lara Lor-Van, when their planet of Krypton was about to be destroyed they saved their son Kal-El by sending him to the planet Earth. Kansan Josephus Kent found Kal-El and presented him to his wife as their own where they soon after named him Atticus Kent.
Similar to either the Kal-El reference from wikia: http://dc.wikia.com/wiki/Kal-El_(Earth-1863) and the Wikipedia reference for Man of Steel (Superman film): http://en.wikipedia.org/wiki/Man_of_Steel_(film) Atticus was taught the values from his adoptive parents of equality among people.
In the original story after his mothers funeral, his father Josephus told him the truth of his origin. When Atticus learned of his spacecraft he unearthed and it received a holographic message from his real parents Jor-El and Lara Lor-Van where he discovered his true mission was to:
Live among the Native Americans in the Western American plains as they are the good people in contrast to the more advanced who south to threaten the aborigines'
existence
He then forged his spaceship into a living horse and rode out..
Another Atticus, was Atticus Finch from the novel 'To Kill A Mocking Bird' the character was known to be a knowledgable, kind, fair and ethical Father that taught others to live with morals and by principals. Noble.
New Superman movie MAN OF STEEL is suppose to come out June 14, 2013 ( LOVE Henry Cavill )